Re: pgsql: Remove useless default clause in switch

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От David Rowley
Тема Re: pgsql: Remove useless default clause in switch
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Msg-id CAKJS1f9xM4dwZDaTEwcFgOsGx-fOkOoD-7xgNxCxGC5dyN9u=g@mail.gmail.com
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Ответ на Re: pgsql: Remove useless default clause in switch  (Alvaro Herrera <alvherre@alvh.no-ip.org>)
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On 24 April 2018 at 13:50, Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
> David Rowley wrote:
>> On 24 April 2018 at 03:12, Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
>> > Remove useless default clause in switch
>> >
>> > The switch covers all values of the enum driver variable, so having a
>> > default: clause is useless, even if it's only to do Assert(false).
>>
>> Just for my own understanding:
>>
>> I always thought that when all options were covered that we generally
>> kept a default just in case someone added another enum and forgot to
>> update the code.
>
> The compiler will emit a warning when it sees that not all cases are
> handled, so it's not necessary to have a default case.

Thank you all for explaining that. It very much makes sense now.

-- 
 David Rowley                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services


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